It's common for the dissectors to become dull after a few years of use, or even after being dropped into a steel or porcelain sink. When the instruments get dull, a few minutes spent with a sharpener can make the delivery of the vasa much easier. Below are a few examples of some instruments that had a dull feeling when trying to make a skin puncture.
Video Demonstration of Sharpening
After sharpening, the tips look much better and the feel of entrance into the vas is much improved. Below are a few examples of tips after sharpening.
To protect the tips during autoclaving and transport, you can use tip protectors. The small holes are designed to allow steam to come in contact with the instruments during the heat sterilization process.